In the autofs script responsible for starting, restarting...
automount (/etc/rc.d/init.d/autofs), the lock file is called
automount.
However, in the rc script (/etc/rc.d/rc) will only stop the
automount if a lock file named autofs is found.
This could result in some hanging when stoping a machine
with nfs mounted file systems.
A quick fix is therefore to rename all the occurences of the
lock file name to autofs in the /etc/rc.d/init.d/autofs
script.